ช่วยด้วยครับมือใหม่หัดเขียน c# ติดปัญหาเชื่อมต่อ mysql ครับ

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using MySql.Data.MySqlClient;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private MySqlConnection connection;
        private string server;
        private string database;
        private string uid;
        private string password;

        private void button1_Click(object sender, EventArgs e)
        {
            //Connect server DB

            server = "localhost";
            database = "shop";
            uid = "root";
            password = "068530252";
            string connectionString;
            connectionString = "SERVER=" + server + ";" + "DATABASE=" + database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";";

            connection = new MySqlConnection(connectionString);
            connection.Open();


            if (connection.State == ConnectionState.Open)
            {
                MessageBox.Show("Connect DB Success");
            }
            else
            {
                MessageBox.Show("Can't connect DB");
            }
            //Close Connection
            connection.Close();
        }
    }
}